Clock



FIG. 1 is a front view, of the clock;

FIG. 2 is a side view, of the clock;

FIG. 3 is the other side view, of the clock;

FIG. 4 is a back view, of the clock;

FIG. 5 is a top view, of the clock; and,

FIG. 6 is a bottom view, of the clock. 

The ornamental design for a clock, as shown. 